Backup for my hard drive and cloud: Is there one program to rule them all?

Readers' corner And so to El Reg Forums, where Monkeyfish has fired up the following thread:

I've been looking at using Google Drive to backup photos and such, should the house burn down. I already use an external HDD for local backups, but do it manually. I'm looking for some recommendations for software that would handle backing up files to the external drive and a cloud service.

But I'd like to stay away from using, say, Google’s own drive software, because I might decide to use Dropbox, or MS, or whoever (or utilise all of the above for maximum storage). I want a single backup program to rule them all, and running in Win7, please.